Tran, T. D., Le, M. T., Tran, T. T., Vu, D. D., Cao, X. T., & Nguyen, D. H. D. (2018). Application of Ultraviolet LED for Sterilizing in Water Purifier. Old Journal, 129, 059-062. https://jst.vn/index.php/old/article/view/763